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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:35                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              072/Erath                                                 VRSN:      W
                                                        072-904/Bluff Dale ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,674,529        0.9459             4,941,885               8               70         .036378808
      2           A                4,691,830        0.9792             4,791,493               9               24         .017208082
      3           A                4,682,497        1.1153             4,198,419               8               15         .019912890
      4           C                8,464,890        0.8528             9,925,997              10              313         .005229924
      5           C                9,169,294        0.7789            11,772,107              10              258         .006800991
      6           C                5,235,935        0.9545             5,485,526              11              115         .005642677
      7           C                7,483,215        1.3111             5,707,585               9               99         .007917983
      8           D3              21,953,050        0.9202            23,856,825              37              800         .036968553
  RANDOM TOTALS:                  66,355,240                          70,679,837             102            1,694
  CATG J  EXCEPTION VALUES:        2,003,780                           3,247,050
  CATG D1 EXCEPTION VALUES:        3,647,070                           3,281,467
  CATG A  EXCEPTION VALUES:        2,628,360                           2,487,982
 TOTAL TEST VALUES (4):           74,634,450                          79,696,336
 MARGIN OF ERROR PERCENT:          5.0000003
 MARGIN OF ERROR VALUE:            3,984,817
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              74,634,450 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             75,711,519 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             83,681,153 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              89,424,369 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES